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CVE-2025-40097— ALSA: hda: Fix missing pointer check in hda_component_manager_init function

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未检查__component_match_add函数返回值，可能导致空指针取消引用。

AI Predicted 4.9 Difficulty: Moderate EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux ae7abe36e352eddf8e30d3b1ea3fb402514ba13b< b044aa6ae63391ba40c93ca5d476d276cb17db1b affected
ae7abe36e352eddf8e30d3b1ea3fb402514ba13b< 1c3f4b15eb1850558d7d4da74b98cffbb8121721 affected
ae7abe36e352eddf8e30d3b1ea3fb402514ba13b< 218a8504e62fc2c8a1fd12523346b7a2b9bd2474 affected
ae7abe36e352eddf8e30d3b1ea3fb402514ba13b< 47d1b9ca923b55c3f407788f1f15b04957e0e027 affected
ae7abe36e352eddf8e30d3b1ea3fb402514ba13b< 1cf11d80db5df805b538c942269e05a65bcaf5bc affected
5.17 affected
< 5.17 unaffected
6.1.189≤ 6.1.* unaffected
… +4 more rows
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I. Basic Information for CVE-2025-40097

Vulnerability Information
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Vulnerability Title
ALSA: hda: Fix missing pointer check in hda_component_manager_init function
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: Fix missing pointer check in hda_component_manager_init function The __component_match_add function may assign the 'matchptr' pointer the value ERR_PTR(-ENOMEM), which will subsequently be dereferenced. The call stack leading to the error looks like this: hda_component_manager_init |-> component_match_add |-> component_match_add_release |-> __component_match_add ( ... ,**matchptr, ... ) |-> *matchptr = ERR_PTR(-ENOMEM); // assign |-> component_master_add_with_match( ... match) |-> component_match_realloc(match, match->num); // dereference Add IS_ERR() check to prevent the crash. Found by Linux Verification Center (linuxtesting.org) with SVACE.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未检查__component_match_add函数返回值，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux ae7abe36e352eddf8e30d3b1ea3fb402514ba13b ~ b044aa6ae63391ba40c93ca5d476d276cb17db1b -
Linux Linux 5.17 -

II. Public POCs for CVE-2025-40097

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III. Intelligence Information for CVE-2025-40097

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Patches & Fixes for CVE-2025-40097 (2)

Same Patch Batch · Linux · 2025-10-30 · 20 CVEs total

CVE-2025-40099 9.4 CRITICAL cifs: parse_dfs_referrals: prevent oob on malformed input
CVE-2025-40095 7.8 HIGH usb: gadget: f_rndis: Refactor bind path to use __free()
CVE-2025-40105 7.8 HIGH vfs: Don't leak disconnected dentries on umount
CVE-2025-40104 7.8 HIGH ixgbevf: fix mailbox API compatibility by negotiating supported features
CVE-2025-40096 7.8 HIGH drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies
CVE-2025-40094 7.8 HIGH usb: gadget: f_acm: Refactor bind path to use __free()
CVE-2025-40093 7.8 HIGH usb: gadget: f_ecm: Refactor bind path to use __free()
CVE-2025-40092 7.8 HIGH usb: gadget: f_ncm: Refactor bind path to use __free()
CVE-2025-40090 7.5 HIGH ksmbd: fix recursive locking in RPC handle list access
CVE-2025-40087 7.5 HIGH NFSD: Define a proc_layoutcommit for the FlexFiles layout type
CVE-2025-40088 7.1 HIGH hfsplus: fix slab-out-of-bounds read in hfsplus_strcasecmp()
CVE-2025-40086 drm/xe: Don't allow evicting of BOs in same VM in array of VM binds
CVE-2025-40091 ixgbe: fix too early devlink_free() in ixgbe_remove()
CVE-2025-40098 ALSA: hda: cs35l41: Fix NULL pointer dereference in cs35l41_get_acpi_mute_state()
CVE-2025-40089 cxl/features: Add check for no entries in cxl_feature_info
CVE-2025-40101 btrfs: fix memory leaks when rejecting a non SINGLE data profile without an RST
CVE-2025-40100 btrfs: do not assert we found block group item when creating free space tree
CVE-2025-40102 KVM: arm64: Prevent access to vCPU events before init
CVE-2025-40103 smb: client: Fix refcount leak for cifs_sb_tlink

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40097

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